package com.filter;


import com.entity.Root;
import com.sun.net.httpserver.HttpServer;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import java.io.IOException;
@WebFilter(value = "/index.html")
public class LoginFilter implements Filter {
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        HttpServletRequest request = (HttpServletRequest) servletRequest;
        HttpServletResponse response = (HttpServletResponse) servletResponse;
        HttpSession session = request.getSession();
        Root root = (Root) session.getAttribute("root");

        if (root!=null){
            filterChain.doFilter(request,response);
        }else {

            response.sendRedirect(request.getContextPath()+"/login.html");

        }
    }

    @Override
    public void destroy() {

    }
}
